Compositionally graded NiTi plate prepared by diffusion annealing

Meng, Qinglin; Yang, Hong; Liu, Yinong; Nam, Tae-hyun

doi:10.1016/j.scriptamat.2012.05.014

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Compositionally graded NiTi plate prepared by diffusion annealing

Meng, Qinglin;
Yang, Hong;
Liu, Yinong;
Nam, Tae-hyun

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42

초록

This paper reports the creation of functionally graded NiTi thin plates with varying composition through thickness. The composition gradient is created by surface diffusing Ni into thin equiatomic NiTi plates. The compositional gradient results in a gradient of the critical temperatures for martensitic transformation in the alloy. The functionally graded NiTi plates exhibit unique reversible one-way shape recovery behavior in a "fishtail-like" motion. Such mechanical behavior offers new options for innovative designs of NiTi, in particular actuators and bionics devices. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

키워드

Shape memory alloy (SMA); Functionally graded materials (FGM); Diffusion; Differential scanning calorimetry (DSC); TITANIUM-NICKEL SYSTEM; SHAPE-MEMORY ALLOYS; MARTENSITIC-TRANSFORMATION; THIN-FILMS; ACTUATORS; DEFORMATION; DESIGN

제목: Compositionally graded NiTi plate prepared by diffusion annealing

저자: Meng, Qinglin; Yang, Hong; Liu, Yinong; Nam, Tae-hyun

DOI: 10.1016/j.scriptamat.2012.05.014

발행일: 2012-08

유형: Article

저널명: Scripta Materialia

권: 67

호: 3

페이지: 305 ~ 308